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CVE-2026-6484— Lack of verified boot to certain FV may cause arbitrary code execution

Quick assessment

Affected
Insyde Software InsydeH2O
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Insyde InsydeH2O是Insyde公司的一款可定制固件代码库。 Insyde InsydeH2O 存在安全漏洞，该漏洞可能导致任意代码执行。

CVSS 8.2 · High EPSS 0.14% · P4

Possible ATT&CK Techniques 1 AI

T1542.001 · System Firmware

Affected Version Matrix 1

VendorProduct Version RangeStatus
Insyde Software InsydeH2O See in the Solution unknown
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I. Basic Information for CVE-2026-6484

Vulnerability Information
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Vulnerability Title
Lack of verified boot to certain FV may cause arbitrary code execution
Source: CVE Program / CVE List V5
Vulnerability Description
In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1277
Source: CVE Program / CVE List V5
Vulnerability Title
Insyde InsydeH2O 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Insyde InsydeH2O是Insyde公司的一款可定制固件代码库。 Insyde InsydeH2O 存在安全漏洞，该漏洞可能导致任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Insyde Software InsydeH2O See in the Solution -

II. Public POCs for CVE-2026-6484

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III. Intelligence Information for CVE-2026-6484

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Vendor Advisories for CVE-2026-6484 (1)

IV. Related Vulnerabilities

Same product: InsydeH2O
Same vendor: Insyde Software

V. Comments for CVE-2026-6484

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